Machine for making vacuum bottles and the like



' April 22, 1930. E. H. ROHL ,7 ,307

MACHINE FOR MAKING VACUUM BOTTLES AND THE LIKE Filed May 3, 1923 5 Sheets-Sheet 1 E. H. ROHL April 22, 1930.

' MACHINE FOR MAKING VACUUM BOTTLES AND THE LIKE Filed May s, 1925 s Sheets-Sheet 2 E.- H. ROHL April 22, 1930.

MACHINE FOR MAKING VACUUM BOTTLES AND THE LIKE 3 Sheets-Sheet 3 Filed May 5, 1925 Patented Apr. 22, 1930' 7 or AMERIC inn 1 3130511,oEcnmAo mmoIs,,As hoajmo THE Mnmtnmn r compl ins:

rnoonroanrhn EACHINEFQR nx'mevnceun BOTTLES Ann ans-t ne a hpplicat ionifile 'd May 3,

: {Tl reinventionrelates-toe method and a machine for the manufacture of vacuum vessale and the like and the object of the invenjtion is to'scal the lower wall of the outer blank from the detailed'zdescription hereinafter pre-r 15 ,sented reference'being hadtofthe accompany;

V to the lower Wallofthe innerblankofa vacuuin vessel. i

- A further object er the lea-aims to'combine a series of units .o f sealing' mechanisms in such manner that the sixsteps ofoperati'ons for sealing the blankscan be easilycom trolled by. one or two operators, thus'saving considerable'timeand*lab'orr a I i The invention; 'Willfbe' fully understood ingl drawings in which i: V J

- Fig. 1 1s a SldG elevatl'on ofone unit of seal ing mechanisms,iparfts ofwhichbeing shown in section.

Fig. 2 is a complete machine consisting of six units of sealing mechanisms and showing the'arra'nge v ment of fires and the mold. f Fig. 3 is-a side elevation of the moldof the sealing'machine. V 4 T f F Fig. 3? is a top view of the mold.

views of blanks ofdifferent steps of operation Fig, *'shows, he inner blank of a vacuum vessel,' t: Fig. 5 the outer blank; 1

Fig. 6-shows the outer blank telescoped i overtheinnerblanh rotation is transmitted to a gear 3 mounted on amain shaft 4. Shafts is provided on its 7 I upper half with gears5, 5, which are in mesh with gears 5 5 mounted on horizontal shafts 7;, 7 respectively," These' shafts "are diagrammatic top- View of the gures :4 to S represen diagrammatic 1923. 7 set-s1 no; assess. V

rotatablymounted on a frame structurealsois lrotatably, mounted'u'pen table '1, by means of roller bearings 10,10: The shafts 7, '7 are provided with gears 11 711 respectively, which are meshwithgears 12, 12?- mountedon vertical shafts 13 13" respective 1y. The shafts 7', 7 are furthermore-pro;

videdwith friction clutchesl5, 1-5 which are 1 respectively provided with rollers 18, 18'

operated'byj levers 17, -17. these levers being i V which come in Contact with arcs r ;19, 19G Thesearcs are arranged so as to throw out the friction 'clutchesl-5,155, thus interrupting without interferingwith the rotation or porotation transmitted bygears 11, 11; when desired, Shaft 13 is provided with a key 14; jenterin-ga slot-in gear .12 (notshownytoper- V mitlongitudinal adjustment of this shaft sition of gear 12. r The means'for longitudi-I nally adjusting shaft 13 consists of a split 13 having projecting pins 113?. This" split n-utis held by threads onth'e lower part of shaft 13 which-latter is carriedby the bracket 20 mounted on'fraine 9. Shaft 1 3 furthermore carries atits upper bifurcated end an extension 21ofheatresisting material, pref? er abl-ymad'e of carbon which serves as a su pport for :aninner blank 2270f a vacuum vessel. Shaft 13'ofgear 12- is madehollow and car tries at its lower end a chuck 23, which' is slotted on its sides asat 24;,to permit increase or I decrease of its diameter-by means cf-a clampi-ng ring 25. I This chuck is furthermore .provided with a lining 23 of heat resisting material, preferably asbestos, which material comesin frictional engagement with the criter blank 26 ofa vacuum vessel inserted into this chuck. The upper part of shaft 13' is in communication with means (not shown) for introducing compressed air through this-holv low-'shaftinto the chuck fora purpose here inafter described;

The mechanisms as lust'rated in Fig.1 of the accompanyingd'rawin'gs representone unit of the sealingenrachine, which preferably consists of six units of like construction with the exception that explained above ilfive'of the-same do not possess a mold. 7 These six units are connected by brackets 27,27" 0 1 mounted onthe frame structure 9 and are of the invention.

therefore operated simultaneously by gears 5, 5' on'main shaft 4, as diagrammatically illustrated in Fig. 2.

The improved construction of a mold 28, for forming the neck of the vacuum'vessel is shown in Figs. 3 andfl and consists of two parts, 28, 28*, which are pivotally connected by hinges 29 attached to the mold parts 28*, 28 Slidably mounted underneath the mold are'rods 30, 31, having loops 32, 33 on one end, through which pins 34, 35, carried by the mold parts are projected and'which pins-are permitted to slide within these loops, when the mold parts are actuated.

which are slidably arrangedwithin grooves 39, 40 of table 41, upon which the mold is mounted. A sleeve 42 is mounted on legs 42 attached to table 41, through which sleeve a.

46. A handlever 48 is pivotally connectedto the casing 46 and is mounted upon a standard 49 carried by the extension 50 of table 41.

In the diagram of Fig. 2 is'shown the arrangement of different burners and fires, which are provided'on five of the units for heating thelower walls of the blanks 26 and 22. A Bunsen burner Bis arranged as shown at I, for the pre-heatingoperation. At'II, III, IV and V, fires for the same purpose are arranged. each fire being of a known type, having air and gas inlets, a. g, but not a part The amount of nozzles for each fire, however, as shown in this figure, has been determined by experiments as being most effective. Y

To operate the sealing machine, first the outer blank of a vacuum vessel is inserted into the rotary chuck 23 and is secured therein by the action of the clamping ring 25 surrounding the slotted walls of the chuck, which ring, when pushed downward, reduces the diameter of the chuck, thus holding the outer blank in position; An inner blank of avacuum vessel then is placed over the extension 21 of shaft '13, which extension is preferably madeof car bon or other heat resisting material; 'Then shaft 13 is raised by actuating split nut 13*, until the inner blank of the vacuum vessel reaches the upper walls of the outer'blank 26.

Then the friction clutches 15, 15- are thrown in by depressing levers 17, 17" to bring the gears 11, 11 into engagement. By means of the electric motor 2 rotation is then-transmitted to chuck 23, Fig. 1. I

To'bring each unit in the position'desired Rods 30, 31, are pivotally connected at 36, while their other ends are fastened to pins 37, 38, respectively,

where the difierent steps of operation take place, handlever 9 attached to the structure frame of each unit is pushed horizontally in counter-clockwise direction until. it reaches a fork-like stop-member 9 which temporarily arrests the movement of the frame structure 9. This stop-member 9 yieldingly holds handlever 9 in position, so that the latter can be easily brought out of engagement when the frame 90f each unit is to be pushed into anotherposition on the table 1 for the next step of operation, When the blanks reach the po sition I,Fig. 2,'pre-lieatin g of the lower parts of the blanks takesplace, while the same are in rotation. In positions II, III and IV heating-of the blanksis increased-as can be seen from'the increasedamount of fires. "In position IV the lower walls of the'outer blank will become so soft under the influence of heat that the surplus amount of glass will melt off, this surplus being indicated in Fig. '7 in dotted'lines; The blanks are brought then '3. After the} shaft 43 has reached its .fore

mostposition, which is limited'by -a stop pin 36, resting against a fork-like stop-member 36 which is mountedon-the'table 41, as shown in Fig. 3, the mold parts 28*, 28 can be closed by the scissor-like arrangement of rods 30, 31, attached to pins37, 38 within slots of arms 47, 47 which are mounted on casing 46 and which arms are projected through slots 42 on each side of sleeve 42. It is-obvious that bymeans of pins 37, 38, sliding in the guidinggrooves 39,40, the mold parts can be closed bymeans 7 into position V where in addition 'to the fires of rods 30, 31, which are slidably mounted on the mold parts 28 ,28 In closed position the mold parts, having ahollow portion 28 pro vided in the same, which is of the same diameter as shaft '13, surround this shaft 13, while the enlarged hollow portion 28 surrounds the neck of the vacuum vessel. lVhile the. mold 15 now in operative pos tion, compressed a r is introduced through the hollow shaft 13 into chuck '23 and from there through the so-called tubulation 26 between the walls of the vacuum vessel. This pneumatic pressure serves to assist in shaplng and finishing the neck of the vacuum vessel by blowing the softened glass of the lower Wall portioninto the form 28 of mold 28. Aftergiving the vacuum bottle its final shape, the introduc' tion' of compressed air then is interrupted, and themold 28 is withdrawninto inoperative position by swinging hand-lever 48' in'opposite direction. Pins37, 38 sliding in the guiding grooves 39, 40act on rods 30, 31,:

thereby opening the mold parts and releasing the enclosed shaft 13 and the finished neck of I the vacuum vessel, whereupon shaft 43is entirely withdrawn, out of thepath of rotation of the sealing machine. The neck of vacuum vessel, still being in soft condition under the influence of fires arranged between position V and VI (not shown) reaches then the last step of-operation, as indicated at VI, 2.

However, shortly before reaching this'fina'l position, either by hand or by some mechan: ical means (not shown in the drawing) the split'nut 13 is given a turn and to facilitate this operation,pins 13 are arranged, the ac-- tuation of which lowers shaft .13 'for a certain length which ispreferably about one six- .tationtransmitted to; gears 12, 12' isthus ina teenth of an inch. 'Asitheinner blank'22 rests tween its walls, which isafterwards taken ecareof in a fWell known manner, Fig. 8 illustrates the finished bottle obtained by this 1. ln combination with a sealing machine,

a mold, pins arranged onsaid mold, scissorlike means attached to said pinsypinsfastened to the other endsof said scissor like 7 means, said pins being guided within grooves arrangedin the support means for said mold, and a handlever connected to the shaft of saidmold. I I r 2 In combination with asealing machine,

amold, pins arranged onsaid mold, scissor like means attached to said pins, pins fastened "to the other ends of said scissorlike' means, a

said pins being guided within grooves arranged in the supporting means for said mold, and a handlever'connected to the shaft of said mold, said shaft being slidably arranged within a sleeve, said sleeve being carried by a. I

support mounted on an extension of said seallng mach ne..

In testimony whereof I affix my signature.

7 new process and machine- After reaching pov I I V sition VI, rollers-18, 18., slidingoverarcs 19,

19, raise levers- 17, 17., thereby throwing out friction clutches 15, 15' respectivelyandroterrupted, The chuck 23 now is in at-rest'position. Clamping ring 25' is then raised,-thus 1 allowing the 'chuck'to expand and to, release the enclosed vacuum vessel.

using'the above described sealingmach ne in combination with its mold, a great saving on labor and material can be obtained,

. as the difi'erentsteps of operation can be easily controlled by one or two glass-blowers, for I which, with older machines and methods,.at least 4 men were needed to accomplish the same amount of work'in a certain period of 1 tlme. By uniting the improved mold with the sealing machine, not onlybreakage is considerably reduced compared with older methods, where molds as tools, independent from the sealing machine were; used, but,

which is of still more, importance, vacuum vessels areobtained, the neck of which,

formed by this mold, are uniform in size and e V shape, a very important factor in the assembly of thelfiller and casing, a result which cannot always be obtained by the older meth- 7 ods. V 7

While the drawings illustrate the preferred f I embodiment of -the invention, nevertheless various changes may be made without departing from the spirit of the invention and I, therefore, do not limit myself to the constructional features as shown, but wish to avail ,myself of any modifications constituting departureswithin the'scope'of the invention as definedin the appendedclaims.

I; claim:

ERICI-I, I-I. ROI-IL. 

